83233557 has 12 divisors (see below), whose sum is σ = 131156064. Its totient is φ = 50444520.

The previous prime is 83233537. The next prime is 83233571. The reversal of 83233557 is 75533238.

83233557 is a `hidden beast` number, since 83 + 23 + 3 + 557 = 666.

It is not a de Polignac number, because 83233557 - 2²⁰ = 82184981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83233537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 420273 + ... + 420470.

It is an arithmetic number, because the mean of its divisors is an integer number (10929672).

Almost surely, 2^83233557 is an apocalyptic number.

It is an amenable number.

83233557 is a deficient number, since it is larger than the sum of its proper divisors (47922507).

83233557 is a wasteful number, since it uses less digits than its factorization.

83233557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840760 (or 840757 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 83233557 is about 9123.2426801001. The cubic root of 83233557 is about 436.6158374364.

The spelling of 83233557 in words is "eighty-three million, two hundred thirty-three thousand, five hundred fifty-seven".